<template>
  <!-- <div>
        <el-button type="info" @click="logout">退出</el-button>
    </div> -->
  <el-container class="home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <!-- 主体 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单 -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ' '"
            v-for="item in menulist"
            :key="item.id"
          >
            <!-- 一级菜单模板 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/'+ subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/'+ subItem.path)"
            >
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-container>
        <!-- 内容主体 -->
        <el-main>
          <router-view></router-view>
        </el-main>
      </el-container>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      menulist: [],
      iconsObj: {
        125: "el-icon-user-solid",
        103: "el-icon-s-grid",
        101: "el-icon-shopping-cart-full",
        102: "el-icon-wallet",
        145: "el-icon-data-line",
      },
      //是否折叠
      isCollapse: false,
      //被激活的链接地址
      activePath:''
    };
  },
  created() {
    this.getMenuList();
    this.activePath=window.sessionStorage.getItem('activePath',this.activePath)
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    //获取所有菜单
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.menulist = res.data;
      console.log(res);
    },
    //点击按钮的折叠与展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse;
    },
    saveNavState(activePath){
    window.sessionStorage.setItem('activePath',activePath)
    this.activePath=activePath
  },
  },
};
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}

.el-header {
  background-color: #373737;
  display: flex;
  justify-content: space-between;
  padding: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;

  > div {
    display: flex;
    align-items: center;

    span {
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaeaea;
}
.iconfont {
  margin-left: 10px;
}
.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>